Results 51 to 60 of about 1,220 (169)

BIOLOGIA REPRODUTIVA DE Clidemia hirta (L.) D. DON (MELASTOMATACEAE) [PDF]

open access: yesActa Amazonica, 1994
Este trabalho foi desenvolvido com a finalidade de apresentar algumas considerações sobre a biologia reprodutiva de Clidemia Iurta, Conclui-se que: I ) A ântese tem início em torno das 18:00 h e termina por volta das 09:00 h do dia seguinte; 2) Esta é ...
Sidney Alberto N. FERREIRA   +2 more
doaj   +1 more source

Morphological and Ecological Traits Explain Variation in Desiccation Tolerance Among Bees

open access: yesEcology and Evolution, Volume 16, Issue 9, September 2026.
We assessed the desiccation tolerance in 22 bee species from the Greek island of Lesbos. Larger bees lost water more slowly and survived longer, while survival declined with increasing water loss rate and water content at mortality. Morphological and ecological traits shaped physiological responses, highlighting trait‐based mechanisms underlying ...
Victor H. Gonzalez   +6 more
wiley   +1 more source

Phylogeny of Halictidae with an emphasis on endemic African Halictinae [PDF]

open access: yesApidologie, 2008
We review the literature on phylogeny, fossil record, biogeography, and social evolution in Halictidae. We then present a phylogenetic analysis of tribal, generic, and subgeneric relationships within the subfamily Halictinae using a combined data set of three nuclear genes: long-wavelength (LW) opsin, wingless, and EF-1α.
Danforth, Bryan N.   +5 more
openaire   +1 more source

Medium‐Length Stamen Mediates Delayed Selfing in a Two‐Step Self‐Pollination System in Commelina communis

open access: yesPlant Species Biology, Volume 41, Issue 5, September 2026.
Heteranthery in Commelina communis integrates a temporally structured two‐step selfing system: prior selfing via bud pollination followed by delayed selfing mediated by the medium‐length stamen (M‐anther). By functioning both as a pollinator reward and a mediator of delayed selfing, the M‐anther links outcrossing with reproductive assurance within a ...
Kaho Ikeda, Yoshiaki Kameyama
wiley   +1 more source

Pollinator Associations of Rare and Endangered Epacris Species (Ericaceae) in Lutruwita/Tasmania: Implications for Conservation

open access: yesAustral Ecology, Volume 51, Issue 9, September 2026.
ABSTRACT The breeding systems of Lutruwita/Tasmania's threatened Epacris taxa are poorly known. Our main objective was to determine the pollinators of several endemic species and explore for relationships between pollinators, floral morphology, flowering time and habitat. The Epacris have limited variation in floral traits and exhibit generalist floral
Karen A. Johnson, Peter B. McQuillan
wiley   +1 more source

Change in habitat over time for the rare, endemic Pediocactus paradinei

open access: yesConservation Science and Practice, Volume 8, Issue 9, September 2026.
Pediocactus paradinei is a rare endemic cactus on the Colorado Plateau that may be increasingly vulnerable to ongoing ecological and climatic change. In 2022, we resampled ecological monitoring plots originally surveyed in 2005 to assess changes in vegetation, habitat conditions, and characteristics related to pollinator habitat across the species ...
Sarah C. Colombo   +3 more
wiley   +1 more source

Revisión sistemática del género Halictillus (Hymenoptera: Halictidae: Augochlorini) en la Argentina Systematic revision of the genus Halictillus (Hymenoptera: Halictidae: Augochlorini) in Argentina

open access: yesRevista de la Sociedad Entomológica Argentina, 2010
Entre los grupos basales de la tribu Augochlorini, se encuentra el género de abejas Halictillus Moure, con sólo dos especies descriptas y ninguna revisión sistemática hasta el momento.
Rocío A. González-Vaquero
doaj  

Structural Colour in Bees (Hymenoptera: Anthophila) Is Linked to Climate and Latitude

open access: yesGlobal Ecology and Biogeography, Volume 35, Issue 9, September 2026.
ABSTRACT Aim Environmental drivers frequently predict global patterns of colour diversity, but whether such patterns depend on the underlying colour mechanisms—pigments or microscopic structures—has scarcely been considered. Structural colour may have different functional properties that result in different associations with environmental variables ...
Patricia Henríquez‐Piskulich   +6 more
wiley   +1 more source

Karyotype Of Augochlora pura (Hymenoptera, Halictidae)

open access: yes, 1985
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Brown, William L. Jr., Ramberg, Frank B.
openaire   +2 more sources

Diversity of bees (Hymenoptera, Apiformes) in extensive orchards in the highlands of Jordan

open access: yesArxius de Miscel-lània Zoològica, 2014
Bees visiting the blossoms of fruit trees were surveyed for the first time in Jordan. A transect was determined in Ebbin village in Ajlun (32° 22″ N, 35° 49″ E) where the bees were collected from blossoms of stone fruit trees.
Al-Ghzawi, A.   +4 more
doaj  

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